diff --git a/src/threading/formatters/JSON.cc b/src/threading/formatters/JSON.cc
index 25ba007596..5320b79d70 100644
--- a/src/threading/formatters/JSON.cc
+++ b/src/threading/formatters/JSON.cc
@@ -31,9 +31,8 @@ bool JSON::NullDoubleWriter::Double(double d)
 	}
 
 JSON::JSON(MsgThread* t, TimeFormat tf, bool arg_include_unset_fields)
-	: Formatter(t), surrounding_braces(true), include_unset_fields(arg_include_unset_fields)
+	: Formatter(t), timestamps(tf), include_unset_fields(arg_include_unset_fields)
 	{
-	timestamps = tf;
 	}
 
 JSON::~JSON() { }
diff --git a/src/threading/formatters/JSON.h b/src/threading/formatters/JSON.h
index e76d3e3edf..5703216cd3 100644
--- a/src/threading/formatters/JSON.h
+++ b/src/threading/formatters/JSON.h
@@ -58,7 +58,6 @@ private:
 	               const std::string& name = "") const;
 
 	TimeFormat timestamps;
-	bool surrounding_braces;
 	bool include_unset_fields;
 	};